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The Gordon S Black Corporation surveyed 439 working parents: 320 of those surveyed said that one parent would stay at home if money were not a factor(Democrat and Chronicle, November 28, 1988). Is there sufficient evidence to conclude that p, the population proportion who would stay at home, is greater than 0.70? Use a=0.02.
a) What are the Ho and HA?
b) What is the p-value?
c) State the conclusion in context of this problem.
Each of the numbers 1 through 10 inclusive has been written on a separate piece of paper. The 10 pieces of paper have been placed in a hat. If one piece of paper is selected at random, with replacement, find the probability that the number selecte..
Two fair dice, one red and one green, are tossed. Explain whether the following pairs of events are mutually exclusive, independent, both, or neither:
According to a survey reported in the Business Week, 30% of adults in the U.S. said that the cell phone is the invention that they hate most but cannot live without.
The clinic wants to cut the stated margin of error in half. How many patients' results must be used?
In general, on what basis are independent variables selected for entry into the equation during stepwise regression?
a. What is the probability that a computer will fail within 12 months? b. If the company gives a warranty period of 12 months, what proportion of computers will fail during the warranty period?
here is a simple probability model for multiple-choice tests. suppose that each student has probability p of correctly
Healthcare issues are receiving much attention in both academic and political arenas. Compute the arithmetic mean age of the uninsured senior citizens to the nearest hundredth of a year.
Formulate the null and alternative hypothesis to test the claim that one-litre cartons of milk are being underfilled. Conduct a hypothesis test for a single mean using α = 0.05.
explain clearly and in detail why a person that simultaneously flips 1023 pennies in the air will nevertheless
an investment adviser for g. prowe rice has many clients owning shares of mutual funds. these mutual funds are
Analyze the data and write a report summarizing your work. Be sure to include details regarding the statistical methods you used, your assumptions, and your conclusions.
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